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Old   December 17, 2005, 02:32
Default passing vehicle analysis
  #1
wilson
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hi guys, i have a project in which i have to simulate the effects of a passing truck on a stationary vehicle (sedan) in a tunnel. Now i am totally blank on this type of analysis. Can any one guide me how to start the analysis procedure.

regards wilson
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Old   December 17, 2005, 18:36
Default Re: passing vehicle analysis
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rohan
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for, this you have to begin with basics or find a partner who canhelp u out....

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Old   December 18, 2005, 13:00
Default Re: passing vehicle analysis
  #3
akin
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Rohan I don't think your comments make any sense or helpful. I know Fluent, has an ad on the net about solving such a problem. Perhaps you can do a search on their website or on the internet. Good luck
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Old   December 19, 2005, 04:02
Default Re: passing vehicle analysis
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Michael Bo Hansen
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Not much help, but then again: I know STAR-CD has a tutorial ( tutorial 11? ) about 2 trains passing each other. Maybe you can come up with some guidance rules from that case even though it is not the same software. Kind Regards
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Old   December 21, 2005, 14:12
Default range of lift/drag ratio for airfoils?
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rohan
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hai???

can any one tell me any exact answer for this with some explainations????
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Old   December 27, 2005, 16:05
Default Re: passing vehicle analysis
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Jeff
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Wilson,

Since there is a stationary object, you'll have to model this with a sliding mesh. For this, the ends will have to be periodic. That is, you are simulating a series of moving vehicles one after the other. If you space them "very" far apart, you can approach a condition of negligible end effects for a single vehicle.

Look at the examples in CFX for using a sliding mesh with periodics. Specifically, you need a linear example (as opposed to rotational).

Good Luck, Jeff
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